package com.zang.netty.bio;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;
import java.util.Date;

/**
 * Runnable
 * SocketServer 简单的时间调用服务器
 * @author Zhang Qiang
 * @Date 2019/7/18 16:32
 */
public class TimeServerHandler implements Runnable {

    private Socket socket;

    public TimeServerHandler(Socket socket){
        this.socket = socket;
    }

    public void run() {
        BufferedReader in = null;
        PrintWriter out = null;
        try {
            in = new BufferedReader(new InputStreamReader(this.socket.getInputStream()));
            out = new PrintWriter(this.socket.getOutputStream(), true);

            String currentTime = null;
            String body = null;

            // 只要有客户端连接即会创建线程，这里如果一直有客户端连接则会无限创建Thread
            while (true){
                body = in.readLine();
                if (body == null){break;}
                System.out.println(" the time server receive order : " + body);
                currentTime = "QUERY TIME ORDER".equalsIgnoreCase(body)? new Date(System.currentTimeMillis()).toString() : "BAD ORDER";
                // 只有使用 println 的时候in.readLine()才会读取到数据，because读行是认为换行符为结束；
                out.println(currentTime);
                System.out.println(" out print (currentTime is): " + currentTime);
            }

        } catch (Exception e){
            if (null != in){
                try {
                    in.close();
                }catch (IOException el){
                    el.printStackTrace();
                }
            }
            if (null != out){
                out.close();
                out = null;
            }
            if (null != this.socket){
                try {
                    socket.close();
                } catch (IOException e1) {
                    e1.printStackTrace();
                }
                this.socket = null;
            }
        }

    }
}
